Paper-feeding machine



F. PATAK.

- PAPER FEEDING MACHINE. APPLICATION man JAN.28, 1920.

1,866,484. Patented Jain. 25,1921.

INVENTOR ATTORNEY FRANK PATAK, OF JERSEY CITY, NEW JERSEY.

PAPER-FEEDING MACHINE.

Application filed January 28, 1920. Serial No.

To all whom it may concern Be it known that I, FRANK PATAK, a citi zenof the United States, and a resident of Jersey Cit in the county ofHudson and State of Niiw Jersey, have invented certain new and usefulImprovements in Paper- Feeding Machines, of which the following is aspecification.

The present invention relates to paper feeding machines, and moreparticularly to separators, that is to say to means for removing anindividual sheet from its position in a stack.

In one type of these machines, springpressed feeding fingers areemployed, said fingers being pivoted to a support and separatingthesheets by being rocked and moved back and forth in relation to thestack. Serious difficulties have been experienced with these feedingmeans for the reason that the springs, acting upon the feeding fingers,are apt to break and are then carried forward to the printing mechanism,causing injury, etc., to the same.

The main object of the invention is to provide a simple and efficientprotecting means, which prevents broken springs from being carriedforward toward the printing mechanism.

Another object of the invention is to so construct the spring protectingmeans that it can be conveniently mounted on already existingstructures, without necessitating any change whatever in theconstruction of the feeding device.

With these and other objects in view, which will more fully appear asthe nature of the invention is better understood, the same consists inthe combination, arrangement and construction of parts hereinafterdescribed, pointed out in the appended claim and illustrated in theaccompanying drawings, it being understood that many changes maybe madein the size and proportion of the several parts and details ofconstruction within the scope of the appended claim, without departingfrom the spirit or sacrificing any of the advantages of the invention.

One of the many possible embodiments of the invention is illustrated inthe accompanying drawings, in which Figure 1 is aside elevation of afeeding mechanism provided with spring protecting means constructed inaccordance with the present invention; Fig. 2 is a front ele-Specification of Letters Patent.

Patented Jan. 25, 1921.

vation thereof; Fig. 3 is a plan view of the same, partly in section;and Fig. 4 is a section taken on line 4-4: of Fig. 3, on a larger scale.

In the drawings, the numeral 10 indicates a rubber roll, mounted on aspindle 11, the latter being fixedly attached to a supporting arm 12.This arm is pivoted on a stud 13, carried by a frame 14. Around the studis coiled a tension spring 15, one end thereof bearing against a pin 16on the arm 12, and its other end engaging a pin 17 on a nut 18, by meansof which the tension of the spring may be varied. The tension springoperates to throw the roll support and roll downward, so as to bring theroll into con tact with the top sheet of the pile. A mechanism 19 of anysuitable construction is 7 provided, to limit the downward movement ofthe roll.

The spring 15 is inclosed by a housing 20, made of two sections, denotedby the numerals 21 and 22, said sections being provided with apertures23 and 24, through which the pins 16 and 17, respectively, extend. Thesection 21 of the housing is fixed by the pin 16 to the arm 12, and thesection 22 is fixed by the pin 17 to the tension nut 18. These twosections are thus movable in relation to each other and do not interferewith the proper operation of the device.

When the parts are assembled, as shown in the several figures of thedrawings, the tension of the spring may be adjusted without dismountingthe housing from the stud 13. All that is necessary is to disengage thecotter pin 25 from the notches 26 in the outer face of the nut, and turnthe latter with the housing section 22 into the proper position, andthen seat the cotter pin in those notches 26, which register with thehole 27 in the stud 13.

In operation, the frame l4,'with the roll support 12 thereon, is movedback and forth and the roll support rocked on its stud 13 in thewell-known manner, to feed the sheets, one after the other, from thestack. The housing section 21 partakes of the rocking motion of the rollsupport. The housing incloses completely the spring, so that, in casethe latter breaks, it will be prevented from dropping onto the paperstack.

What I claim is In a sheet feeding device, the combination with amovable frame provided with a stud, of a roll support pivoted to saidstud, a roll carried by said'support, a tension spring on said stud anadjusting nut on said stud, one end of said tension spring being inengagement with said r011 support and the other end with said nut, and ahousing on said stud completely inolosing said spring, said housingbeing made of two sections, one of .day of January, 1920.

which is fixed to said roll support and the other one to said adjustingnut.

Signed at New York, in the county of 10 New :York and State of New York,this 15th FRANK PATAK.

